Patents by Inventor Nanette L Hultgren

Nanette L Hultgren has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Carbon fiber tubular pole and method of manufacture
    Patent number: 9884473
    Abstract: A carbon fiber tubular pole and method of construction thereof. The pole includes a left in place lightweight mandrel, preferably formed of tubular polyvinylchloride or cardboard, which substantially reduces cost of manufacture. A socket is formed in the carbon fiber tubular pole for receiving an adjacent carbon fiber tubular pole.
    Type: Grant
    Filed: July 10, 2014
    Date of Patent: February 6, 2018
    Inventor: Nanette L Hultgren
  • Compression molding of carbon fiber tubular pole
    Patent number: 9592657
    Abstract: An apparatus and method is disclosed for making a carbon fiber tubular component by sliding a carbon fiber sleeve and a fiber sleeve over a tubular mandrel. The sleeves overlying the tubular mandrel are saturated with a curable resin and inserted into a mold cavity of a compression mold. The cured carbon fiber tubular component is removed from the compression mold after the curing of the resin.
    Type: Grant
    Filed: July 14, 2014
    Date of Patent: March 14, 2017
    Inventor: Nanette L. Hultgren
  • Carbon fiber tubular pole and method of manufacture
    Patent number: 8845845
    Abstract: A carbon fiber tubular pole and method of construction thereof. The pole includes a left in place lightweight mandrel, preferably formed of tubular polyvinylchloride or cardboard, which substantially reduces cost of manufacture. Moreover, an outer tubular glass fiber sleeve over a tubular carbon fiber sleeve resin saturated through and through maintains the aesthetic appearance of the black carbon fiber while substantially strengthening the end product. A second outer layer of a mixture of resin and colloidal silica over the cured resin layer adds shine and increases smoothness.
    Type: Grant
    Filed: December 16, 2011
    Date of Patent: September 30, 2014
    Inventors: Nanette L. Hultgren, Steven C. Austin
  • Carbon fiber tubular pole and method of manufacture
    Patent number: 8778123
    Abstract: A carbon fiber tubular pole and method of construction thereof. The pole includes a left in place lightweight mandrel, preferably formed of tubular polyvinylchloride or cardboard, which substantially reduces cost of manufacture. A socket is formed in the carbon fiber tubular pole for receiving an adjacent carbon fiber tubular pole.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: July 15, 2014
    Inventors: Nanette L Hultgren, Steven C Austin